The Schematic window allows selective expansion and exploration of the logical design. You must select at least one logic object to open and display the Schematic window.
In the Schematic window, view and select any logic. You can display groups of timing paths to show all of the instances on the paths. This aids floorplanning because it helps you visualize where the timing critical modules are in the design.
To open the Schematic window, select one or more instances, nets, or timing paths, and select Schematic from the window toolbar or the right-click menu, or press the F4 key.
The window opens with the selected logic displayed, as shown in This Figure.
You can then select and expand the logic for any pin, instance, or hierarchical module.